CA2069876A1 - An apparatus for filtering suspensions and a method of operating the apparatus - Google Patents

An apparatus for filtering suspensions and a method of operating the apparatus

Info

Publication number
CA2069876A1
CA2069876A1 CA 2069876 CA2069876A CA2069876A1 CA 2069876 A1 CA2069876 A1 CA 2069876A1 CA 2069876 CA2069876 CA 2069876 CA 2069876 A CA2069876 A CA 2069876A CA 2069876 A1 CA2069876 A1 CA 2069876A1
Authority
CA
Canada
Prior art keywords
hollow shaft
fine fraction
created
suspensions
fraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2069876
Other languages
French (fr)
Other versions
CA2069876C (en
Inventor
Rune Frykhult
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kempulp Sweden AB
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26660724&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2069876(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from SE9000569A external-priority patent/SE9000569L/en
Priority claimed from SE9000571A external-priority patent/SE9000571L/en
Application filed by Individual filed Critical Individual
Publication of CA2069876A1 publication Critical patent/CA2069876A1/en
Application granted granted Critical
Publication of CA2069876C publication Critical patent/CA2069876C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B01D33/23—Construction of discs or component sectors thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/68—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/74—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging filtrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
    • B01D33/763—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/804—Accessories integrally combined with devices for controlling the filtration
    • B01D33/807—Accessories integrally combined with devices for controlling the filtration by level measuring
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/48—Overflow systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Paper (AREA)
  • Filtering Materials (AREA)

Abstract

A disc filter for filtering mat forming suspensions, such as fibre pulp suspensions, is provided with a hollow shaft for receiving a flow of fine fraction created by hydrostatic pressure difference between the suspension to be filtered and the fine fraction in the hollow shaft. According to the invention, each disc (7) is provided with a number of fine fraction chambers (11) communicating with the interior of the hollow shaft via respective holes (12) in the circumferential wall (5) of the shaft. Each chamber (11) is arranged, such that it functions as a dropleg during movement upwards, with the result that the coarse particle (fibre) concentration of the created coarse fraction is increased.
CA002069876A 1990-02-16 1991-02-18 An apparatus for filtering suspensions and a method of operating the apparatus Expired - Fee Related CA2069876C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9000571-1 1990-02-16
SE9000569A SE9000569L (en) 1990-02-16 1990-02-16 Pulp thickener with enhanced capacity - comprises hollow shaft receiving filtrate via holes communicating with chambers between radial partitions within screening rotor
SE9000569-5 1990-02-16
SE9000571A SE9000571L (en) 1990-02-16 1990-02-16 ROOTABLE FILTER, WIRELESS STEP FOR DRAINING FIBER PASS PENSIONS
PCT/SE1991/000110 WO1991012063A1 (en) 1990-02-16 1991-02-18 An apparatus for filtering suspensions and a method of operating the apparatus

Publications (2)

Publication Number Publication Date
CA2069876A1 true CA2069876A1 (en) 1991-08-17
CA2069876C CA2069876C (en) 2000-05-23

Family

ID=26660724

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002069883A Abandoned CA2069883A1 (en) 1990-02-16 1991-02-18 Apparatus for filtering liquids
CA002069876A Expired - Fee Related CA2069876C (en) 1990-02-16 1991-02-18 An apparatus for filtering suspensions and a method of operating the apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002069883A Abandoned CA2069883A1 (en) 1990-02-16 1991-02-18 Apparatus for filtering liquids

Country Status (7)

Country Link
US (1) US5330646A (en)
EP (2) EP0515492B1 (en)
JP (2) JPH05505554A (en)
CA (2) CA2069883A1 (en)
DE (2) DE69110276T2 (en)
FI (1) FI94839C (en)
WO (2) WO1991012063A1 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673454B1 (en) * 1992-12-14 1998-04-01 Beloit Technologies, Inc. Apparatus for filtering suspensions
SE9301438D0 (en) * 1993-04-28 1993-04-28 Roger Haeffner DEVICE FOR FILTER
SE9302781D0 (en) * 1993-08-27 1993-08-27 Siri Frykhult Fractionation Device
AT401014B (en) * 1994-08-16 1996-05-28 Andritz Patentverwaltung METHOD AND DEVICE FOR THICKENING OR FOR FIBER FABRIC WASHING
AT403064B (en) * 1995-09-15 1997-11-25 Andritz Patentverwaltung Disc filter for separating liquids from a suspension, especially fibrous suspension
SE9703139D0 (en) * 1997-09-01 1997-09-01 Frykhult R Ingf Ab Apparatus for filtering suspensions
US6120614A (en) * 1997-11-14 2000-09-19 Ez Environmental Solutions Corporation Method and apparatus for pressure washing
CN1163293C (en) * 1997-12-12 2004-08-25 水技术尼尔森-奥克佩尔松股份公司 Rotary disc filter
GB0122074D0 (en) * 2001-09-12 2001-10-31 Copa Ltd Filtering apparatus
RU2238784C1 (en) * 2003-04-25 2004-10-27 Общество с ограниченной ответственностью "Техносервис" Disk vacuum filter
RU2238785C1 (en) * 2003-04-25 2004-10-27 Общество с ограниченной ответственностью "Техносервис" Method to decrease moisture of a disk vacuum filter cake at the cake removal by the compressed air blowing off
CN102527134B (en) * 2006-08-14 2014-12-10 伊沃夸水处理技术有限责任公司 High flow disc filter
SE530282C2 (en) * 2006-10-27 2008-04-15 Metso Paper Inc Washing press comprising separation of filtrate
US8801929B2 (en) * 2007-07-18 2014-08-12 Evoqua Water Technologies Llc Trash tolerant filter support for a disc filter
US8118175B2 (en) 2007-07-18 2012-02-21 Siemens Industry, Inc. Venting device for a disc filter
US8894856B2 (en) 2008-03-28 2014-11-25 Evoqua Water Technologies Llc Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods
KR20100136989A (en) 2008-03-28 2010-12-29 지멘스 워터 테크놀로지스 코포레이션 Aerobic and Anaerobic Hybrid Wastewater and Sludge Treatment Systems and Methods
FI20096086L (en) * 2009-10-21 2011-04-22 Metso Paper Inc Disc filter, both method and system for adjusting the disc filter
US9359236B2 (en) 2010-08-18 2016-06-07 Evoqua Water Technologies Llc Enhanced biosorption of wastewater organics using dissolved air flotation with solids recycle
DE102012213769A1 (en) * 2012-08-03 2014-02-06 Voith Patent Gmbh disc filter
AU2014262972B2 (en) 2013-05-06 2017-09-28 Evoqua Water Technologies Llc Wastewater biosorption with dissolved air flotation
DE102014103831A1 (en) * 2014-03-20 2015-09-24 Huber Se Filter device for the filtration of waste water
LT3151943T (en) 2014-06-05 2021-04-12 Evoqua Water Technologies Llc Filtering panel and method of making the same
US9803319B2 (en) * 2014-12-19 2017-10-31 Andritz Inc. Press roll comb plate and related method
WO2018031884A1 (en) 2016-08-12 2018-02-15 Evoqua Water Technologies Llc Disc filter pre-screen dual media disc filter
DE102018113804A1 (en) * 2018-06-11 2019-12-12 Voith Patent Gmbh disc filter
DK3758825T3 (en) * 2018-11-12 2021-11-15 O M It S R L FILTERING DEVICE AND PROCEDURE
CN109518510A (en) * 2018-12-28 2019-03-26 山东晨钟机械股份有限公司 The slurries thickener armature spindle and thickener of a kind of band from agitating function
US11000791B2 (en) * 2019-03-06 2021-05-11 Veolia Water Solutions & Technologies Support Rotary disc filter having backwash guides
CN111877044B (en) * 2020-07-10 2022-07-12 郑州科技学院 A kind of waste paper pulp recycling treatment device
CN113476935B (en) * 2021-07-23 2022-12-23 云浮市粤海环保有限公司 Rotary disc filter convenient to install and dismantle for sewage treatment
CN113735391B (en) * 2021-09-30 2022-10-11 中国环境科学研究院 A flower bed type courtyard domestic sewage treatment device and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI55446C (en) * 1976-07-02 1979-08-10 Enso Gutzeit Oy SKIVFILTER
DK152176B (en) * 1978-06-23 1988-02-08 Danske Sukkerfab ROOTABLE DRUM OR PLATE FILTER
US4330405A (en) * 1980-09-29 1982-05-18 Davis Kent L Vacuum disc filter
CA1219530A (en) * 1982-12-22 1987-03-24 Rune H. Frykhult Rotatable filter assembly
JPS6190716A (en) * 1984-10-11 1986-05-08 Kaname Miura Dynamic filter
DE3528429A1 (en) * 1985-08-08 1987-02-12 Voith Gmbh J M DISC THICKER

Also Published As

Publication number Publication date
WO1991012063A1 (en) 1991-08-22
EP0515502A1 (en) 1992-12-02
JPH05505553A (en) 1993-08-19
DE69107199D1 (en) 1995-03-16
WO1991012065A1 (en) 1991-08-22
FI94839B (en) 1995-07-31
US5330646A (en) 1994-07-19
DE69107199T2 (en) 1995-09-14
CA2069883A1 (en) 1991-08-17
DE69110276T2 (en) 1996-02-22
JPH05505554A (en) 1993-08-19
FI94839C (en) 1995-11-10
EP0515492A1 (en) 1992-12-02
FI923599L (en) 1992-08-12
EP0515492B1 (en) 1995-02-01
CA2069876C (en) 2000-05-23
EP0515502B1 (en) 1995-06-07
FI923599A0 (en) 1992-08-12
DE69110276D1 (en) 1995-07-13

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Legal Events

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